Does the size of the vulva change by age or does it remains the same as it is since after birth?

The shape and appearance of the vulva naturally change over the years.

Explanation:

The shape and appearance of the vulva naturally change over the years. The most obvious changes are linked to hormonal changes, occurring at puberty, during the menstrual cycle, in pregnancy and around menopause.

velocity and height

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.